The site can't be reached

I installed Pi-Hole and configured my Nexus 5 (Android M) with the correct DNS server. It gives the message 'Wifi has no internet access', and I can't connect to the internet.

However when I go to [pi]/admin traffic seems to show up, implying it's sort of working.

I tried testing on me Windows desktop... and it did nothing at all. I can connect to the internet fine but no ads are blocked and the traffic doesn't show up in the pi-hole web interface.

Anything I can do?

Can you send the output of
tail /var/log/pihole.log
and
tail /etc/pihole/gravity.list